SQL Server - Round TIME values to the next minute

问题

I've found many posts about rounding "down" time values (e.g. https://stackoverflow.com/a/6667041/468823), but I have another problem: I wanna round to the higher minute and not to the lower, how can I do?

My code:

SELECT

 PA.ORE AS TOT_HOURS,  
 CAST(CAST(PA.ORA_INIZIO AS DATETIME) AS TIME) AS BEGIN_TIME,
 CAST(dateadd(minute, datediff(minute, 0, (CAST(PA.ORA_INIZIO AS DATETIME))), 0) AS TIME) AS BEGIN_TIME_ROUNDED


FROM PRG_ATTIVITA PA INNER JOIN PRG_TIPI_ATTIVITA PTA ON  PA.ID_TIPO_ATTIVITA = PTA.ID_TIPO_ATTIVITA
                     INNER JOIN PER_ANAGRAFICA PAN ON PA.ID_DIPENDENTE = PAN.ID_DIPENDENTE
WHERE PA.ID_PROGETTO = 1431 and pta.DESCR_TIPO_ATTIVITA like 'F-%remoto%' and ID_ATTIVITA = 41772 

ORDER BY  PA.DATA_ATTIVITA

My result is the following:

    TOT_HOURS   BEGIN_TIME          BEGIN_TIME_ROUNDED
    1.50        15:59:59.9970000    15:59:00.0000000

I want BEGIN_TIME_ROUNDED = 16:00:00.0000000

NOTES: 1. I must convert my data { CAST(PA.ORA_INIZIO AS DATETIME) } because in the database I have time data as float values 2. BEGIN_TIME is the real value of my time value after conversion

回答1:

SELECT  DATEADD(MINUTE, CEILING(DATEDIFF(SECOND, 0, CAST(CAST(PA.ORA_INIZIO AS DATETIME) AS TIME)) / 60.0), DATEDIFF(DAY, 0, PA.ORA_INIZIO)) AS BEGIN_TIME_ROUNDED

回答2:

Just CAST to smalldatetime for rounding to nearest minute

SELECT 
    CAST(CAST('15:59:59.9970000' AS time) AS smalldatetime),
    CAST(CAST('15:59:30.0030000' AS time) AS smalldatetime),
    CAST(CAST('15:59:30.0000000' AS time) AS smalldatetime),
    CAST(CAST('15:59:29.9970000' AS time) AS smalldatetime),
    CAST(CAST('15:59:00.0030000' AS time) AS smalldatetime)

The DATEADD/DATEDIFF is for truncating some time unit

Edit, misread questions

Just modify your current CAST

CAST(
 DATEADD(minute,
         DATEDIFF(minute, 
                  0, 
                  CAST(PA.ORA_INIZIO AS DATETIME)
                 ) + 1, 
         0
         )
     AS TIME)

回答3:

Don't know SQL Server well enough to answer off hand, but if no one comes by with a more more de facto way of doing this, then you could just add 1 minute to the value before rounding it down. Or add 0.999 minutes if you need to handle integer input values correctly as well.

回答4:

declare @t time 
set @t = '10:28:00.001'
select cast(dateadd(millisecond, 29999, @t) as smalldatetime)

回答5:

If you wanted to round DATETIME d up to the nearest minute, you could do this:

CONVERT(DATETIME, CONVERT(SMALLDATETIME,
  DATEADD(minute, CASE WHEN d = CONVERT(SMALLDATETIME, d) THEN 0 ELSE 1 END,
  d)))

来源：https://stackoverflow.com/questions/9274457/sql-server-round-time-values-to-the-next-minute

标签

sql

sql-server-2008

tsql

rounding

sqldatetime